详细讲解PHP编程中分页显示的制作

详细讲解PHP编程中分页显示的制作(4)            else
           {
               $this->numPages = $this->numItems / $this->PageSize;
           }
       }
       else
       {
           $this->numPages = 0;
       }
      
       switch ( $this->CurrentPageID )
       {
           case $this->numPages == 1:
               $this->isFirstPage = true;
               $this->isLastPage = true;
               break;
           case 1:
               $this->isFirstPage = true;
               $this->isLastPage = false;
               break;
           case $this->numPages:
               $this->isFirstPage = false;
               $this->isLastPage = true;
               break;